Hey , Soot,
I hesitate to respond, because I've already made an ass of myself several times on this topic. Some of us never learn..
As a newbie, i decided to try the Cobra Powrpro, which appears to be a similar type of fuel controller. My new SG was not running great when I first brought it home; ran very hot (300 on hot days), stalled when hot, had throttle lag, back fired and had decel popping. So, planned to use the PowrPro while upgrading the motor until I was satisfied, then get a TTS Mastertune and dynotune it then. When I first installed the PowrPro, I was really impressed. It did everything as advertised. Ran cooler, much better throttle response, almost completely eliminated back firing and decel popping, and adapted easily when I put on a whole new exhaust system. It served its purpose, and now I've gone to the TTS after further mods.
There's three issues I have with those "self tuning" devices that measure crankshaft acceleration. First is cost. If they were $200-$250, they'd be a great option. Somebody makes a fuel controller called a FuelPak, a simple controller that can be adjusted manually, that's pretty inexpensive, and works just as well. Second, it ran inconsistently. Idle was rough, I felt it ran too rich sometimes and the condition of the plugs showed it to be running rich. One day my bike ran like a raped ape, and other days it seemed like the fueling was rough and inconsistent. Finally, there's no way to adjust anything. This is the fatal flaw, and makes it unacceptable for serious riders. It will never work as well as a well dynotuned bike.
Don't get me wrong, these kinds of tuners work much better than the EPA compliant stock mappings on the ECMs. But, there are better alternatives. Like Ken and Jerry said above, the Fullsac setup with a TTS and map from Steve will cost less than the set up you mentioned earlier, and probably perform better. Plus, if you have issues with the map Fullsac gives you, they will work with you until you're happy.
Take it from the voice of experience.